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math.AT2004★ 2 cited
The topology of the category of open and closed strings
Nils A. Baas, Ralph L. Cohen, Antonio Ramirez
In this paper we study the topology of the cobordism category of open and closed strings. This is a 2-category in which the objects are compact one-manifolds whose boundary compone…
math.AT2003★ 50 cited
A polarized view of string topology
Ralph L. Cohen, Veronique Godin
Let M be a closed, connected manifold, and LM its loop space. In this paper we describe closed string topology operations in h_*(LM), where h_* is a generalized homology theory tha…